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Finding the Fourth Proportional to 203,648.34, 305,493.30 and 70,528.35

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Solution

The fourth proportional to 203,648.34, 305,493.30 and 70,528.35 is: 105,799.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,648.34 : 305,493.30 = 70,528.35 : x
  2. Step 2: Convert to fraction form
    203,648.34/305,493.30 = 70,528.35/x
  3. Step 3: Cross multiply
    203,648.34x = 305,493.30 × 70,528.35
  4. Step 4: Simplify right side
    203,648.34x = 21,545,938,385.06
  5. Step 5: Solve for x
    x = 21,545,938,385.06/203,648.34
  6. Step 6: Final answer
    x = 105,799.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.